The idea is basically good - but then there should be more than this: Description: HTTP 404. The resource you are looking for (or one of its dependencies) could have been removed, had its name changed, or is temporarily unavailable. Please review the following URL and make sure that it is spelled correctly.
Doesn't look like the database is working particularly well
Update: after some searching in the source you can get this URL, where after several attempts you finally get a response now and then ...
At heise online news you can find the original article.